1iofits(1)                   General Commands Manual                  iofits(1)
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NAME

6       iofits - FITS data format conversion (pixel depth)
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SYNOPSIS

9       iofits [options] <in_fits> <out_fits> <depth>
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DESCRIPTION

12       iofits  converts  FITS  files of any pixel depth to another pixel depth
13       (bits per pixel). Depth is given as in the FITS norm :
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15       ·      8 bits per pixel, unsigned.
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17       ·      16 bits per pixel, signed
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19       ·      32 bits per pixel, signed
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21       ·      -32 IEEE floating point
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23       ·      -64 IEEE double precision floating point
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OPTIONS

26       -v     Verbose mode.
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28       -M megs
29              Memory handling. To avoid saturate memory for huge  cubes,  this
30              parameter  specifies  the maximum amount of memory to use before
31              swapping data to disk.  The amount is given in Megabytes.  (1Meg
32              =  1,048,576 Bytes) The process time is then considerably slowed
33              down.  Default value is 50 megs.
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FILES

36       Input/output files shall all comply with FITS format.
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38       The original FITS header  of the input FITS file  is  conserved  along,
39       except  for  the  following  keywords:  NAXIS,  NAXISn, BITPIX, BSCALE,
40       BZERO, which are related to the newly created file.
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42       HISTORY keywords are appended  to  the  FITS  header  to  indicate  the
43       eclipse process modifications, together with the command line which was
44       used to generate the file.
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SEE ALSO

47       average, filt, deadpix
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BUGS

50       In general, decreasing the resolution  in  number  of  bits  per  pixel
51       almost  always  means  loss  of  precision. No rescaling is done on the
52       data, use this command with care!
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56                                  25 Feb 1997                        iofits(1)